Writes a bedGraph conform file with coordinates
defined by vectors: "contig", "start", and "end". According to:
https://genome.ucsc.edu/goldenPath/help/bedgraph.html
"start" and "end" are zero indexed and half opened. The caller needs to make sure
that this is fullfilled.
Usage
write_bedGraph(file, contig, start, end, value)
Arguments
- file
String represents the filename of the BED graph file.
- contig
vector of character string represting the contig(s)
- start
vector of numericals zero indexed (>= 0)
- end
vector of numericals half opened: [start, end)
- value
vector of character strings or numericals representing value(s)